/*! This file is auto-generated */ .wp-block-button__link{color:#fff;background-color:#32373c;border-radius:9999px;box-shadow:none;text-decoration:none;padding:calc(.667em + 2px) calc(1.333em + 2px);font-size:1.125em}.wp-block-file__button{background:#32373c;color:#fff;text-decoration:none} Q 28. Superpower 聽Refer to Exercise 2... [FREE SOLUTION] | 91影视

91影视

Log out

Learning Materials

Features

Discover

Chapter 1: Q 28. (page 27)

Superpower Refer to Exercise 24.

(a) What proportion of students in the sample who prefer invisibility as their superpower are from the United States?

(b) What percent of students in the sample who are from the United Kingdom prefer superstrength as their superpower?

Short Answer

Expert verified

Part (a)3767鈮�0.5522

Part (b) 10%

Step by step solution

01

Part (a) Step 1. Given information.

The given table from exercise 24 is shown below:




U.K.
U.S.
Row Total
Fly544599
Freeze time
524496
Invisibility
303767
Superstrength
202343
Telepathy
4466110
02

Part (a) Step 2. Find the proportion of students who prefer superpower invisibility from the United States.

Total students who prefer invisibility are: 67

Students from the U.S.who prefer invisibility are: 37

Therefore, their proportion is:

3767鈮�0.5522

03

Part (b) Step 1. Find the percent of students from the United Kingdom who prefer superstrength as their superpower.

Total students from the United Kingdom are:

54+52+30+20+44=200

Students from the U.K.who prefer superstrength are: 20

Therefore, their percentage is:

20200=0.10or10%

Unlock Step-by-Step Solutions & Ace Your Exams!

  • Full Textbook Solutions

    Get detailed explanations and key concepts

  • Unlimited Al creation

    Al flashcards, explanations, exams and more...

  • Ads-free access

    To over 500 millions flashcards

  • Money-back guarantee

    We refund you if you fail your exam.

Over 30 million students worldwide already upgrade their learning with 91影视!

One App. One Place for Learning.

All the tools & learning materials you need for study success - in one app.

Get started for free

Most popular questions from this chapter

Where do the young live? Here is a stemplot of the percent of residents aged 25 to 34 in each of the 50 states:

Part (a). Why did we split stems?

Part (b). Give an appropriate ate key for this stemplot.

Part (c). Describe the shape of the distribution. Are there any outliers?

Here are the amounts of money (cents) in coins carried by 10 students in a statistics class: 50, 35, 0, 46, 86, 0, 5, 47, 23, 65. To make a stemplot of these data, you would use stems

a. 0, 2, 3, 4, 6, 8.

b. 0, 1, 2, 3, 4, 5, 6, 7, 8.

c. 0, 3, 5, 6, 7.

d. 00, 10, 20, 30, 40, 50, 60, 70, 80, 90.

e. None of these.

Hit movies According to the Internet Movie Database, Avatar is tops based on box-office receipts worldwide as of January 2017. The following table displays data on several popular movies. Identify the individuals and variables in this data set. Classify each variable as categorical or quantitative.

Enhancing creativity Do external rewards鈥攖hings like money, praise, fame, and grades 鈥攑romote creativity? Researcher Teresa Amabile recruited 47 experienced creative writers who were college students and divided them at random into two groups. The students in one group were given a list of statements about external reasons (E) for writing, such as public recognition, making money, or pleasing their parents. Students in the other group were given a list of statements about internal reasons (I) for writing, such as expressing yourself and enjoying wordplay. Both groups were then instructed to write a poem about laughter. Each student鈥檚 poem was rated separately by 12 different poets using a creativity scale. 26 These ratings were averaged to obtain an overall creativity score for each poem. Parallel dotplots of the two groups鈥� creativity scores are shown here.

Part (a). Is the variability in creativity scores similar or different for the two groups? Justify your answer.

Part (b). Do the data suggest that external rewards promote creativity? Justify your answer.

Snickers庐 are fun! Here are the weights (in grams) of 17 Snickers Fun Size bars from a single bag:

17.117.416,617.417.717.117.317.717.8
19.216.015.916.516.816.517.116.7

Part (a). Make a stemplot of these data.

Part (b). What interesting feature does the graph reveal?

Part (c). The advertised weight of a Snickers Fun Size bar is 17 grams. What proportion of candy bars in this sample weigh less than advertised?
See all solutions

Recommended explanations on Math Textbooks

Mechanics Maths

Read Explanation

Probability and Statistics

Read Explanation

Decision Maths

Read Explanation

Theoretical and Mathematical Physics

Read Explanation

Statistics

Read Explanation

Logic and Functions

Read Explanation
View all explanations

What do you think about this solution?

We value your feedback to improve our textbook solutions.

Study anywhere. Anytime. Across all devices.